# Given the Atomic Mass of Copper As 63.60 Amu, Please Fill in the Missing Piece

Chem 1500

Week 5 Session 2

Test Review!!!!!!

- Given the atomic mass of copper as 63.60 amu, please fill in the missing piece:

Mass(amu) / Percent Abundance

63Cu / 62.9898 / 69.17%

65Cu / 30.83%

- Which atom on the periodic table has the smallest radius?
- Fluorine
- Francium
- Lithium
- Radon
- Which atom on the periodic table is the least electronegative?
- Carbon
- Neon
- Francium
- Helium
- Fill in the following table with the correct atomic mass, protons and neutrons of each element.

Number of Protons / Number of Neutrons / Number of Electrons

70Ga3+

13C

11Na3+

35 / 30 / 37

- Answer the following questions true or false:
- Electronegativity increases going across the periodic table

- An elements atomic mass is the mass of protons and neutrons in the element.

- The basic SI unit for volume is mL.

- Magnesium is an alkali metal.

- g/mL are the only units density can be written in.

- The percent of isotopes is considered when calculating the atomic mass shown on the periodic table.

- Convert to
- 2.80 x 1013
- 2.8 x 1013
- 1.01 x 1017
- 1.0 x 1017

- How many sigfigs are in
- 1
- 2
- 3
- 4
- What is the density of a metal that has a volume of 7.8m3 and a mass of 147kg?(1 cm3=1ml)
- 5.3 x 102
- 5.3 x 104g/ml
- 5.3 x 10-2g/ml
- 5.3 x 106
- The density of a substance is 4.1kg/L, what is the mass of the substance if the volume is 89ml?
- 364.7
- .36
- 360
- 3.6x 105

- Rank the following elements in terms of atomic radius. 1 being the smallest and 5 being the biggest.
- Oxygen
- Fluorine
- Calcium
- Sodium
- Tungsten
- What is the mass percent of oxygen in a sample containing 0.45kg oxygen, 65.8g carbon, 89.6g nitrogen and 3.4kg fluorine?
- 0.28%
- 11.2%
- 0.282%
- 11.23%

- Fill in the blanks on the following table.

°C / K / °F

34.4°C

367K

98°F

- Suppose you have an area that has the dimensions of 45m x 378m x 127m, it takes you one minute to clean 32cm3of the area. How many hours will it take you to clean the entire space?
- 4.1 hr
- 4.14 hr
- 4.14 x106 hr
- 4.1 x 106 hr
- If water has a specific heat of 4.18J/g°C, how much energy would be absorbed if there were 4.5kg of water and the temperature changed from was 45°F to 78°F.
- 3.44 x 105
- 6.20 x 105
- 3.4 x 105
- 6.2 x 105
- Explain the trends of the atomic radius on the periodic table.

- Explain where the protons, neutrons, and electrons are found in an atom.

- How many electrons does chlorine have if it contains 17 neutrons and has a charge of +2
- 17
- 19
- 15
- 37

- If it takes exactly 3 days for a cantaloupe to ripen at an altitude of 460ft. How long would it take in seconds with the altitude in inches?

- Answer the following questions knowing that the density of ethanol is 0.79g/ml.
- How many liters of ethanol contain 1.5kg of ethanol?

- How many grams of mercury are present in a barometer that hold 6.5ml

- A sculptor has prepared a mold for casting a silver figure. The figure ahs a volume of 225 cm3. How many ounces of silver are needed in the preparation of the silver figure?

- Calculate the mass in grams of a sample of gold that absorbs 225J of heat to increase the temperature 15.0°C to 47.0°C? Au has a specific heat of 0.902.

- Indium(In) has two naturally occurring isotopes: In-113 and In-115. In-113 has a 4.30% abundance and a mass of 112.9 amu. In-115 has a 97.5% abundance with a mass of 114.9. Calculate the atomic mass of Indium. Show all of your work.